Sintering resistant, low conductivity, high stability...

Details Sintering resistant, low conductivity, high stability... Sintering resistant, low conductivity, high stability...

2008-09-30

2008-09-30

Zimmerman, John J. (Department: 1794)

Stock material or miscellaneous articles

Composite

Of silicon containing

C428S446000, C428S469000, C428S472000, C428S701000, C428S702000, C416S24100B, C416S24100B

Reexamination Certificate

active

11006368

ABSTRACT:
In accordance with an embodiment of the invention, a thermal barrier coating (TBC) for inclusion in a thermal barrier coating/environmental barrier coating system (TBC/EBC system) for use on a silicon containing material substrate is provided. The TBC comprises a compound having a primary constituent portion and a stabilizer portion stabilizing said primary constituent. The primary constituent portion of the TBC comprises hafnia present in an amount of at least about 5 mol % of the primary constituent. The stabilizer portion of said thermal barrier coating comprises at least one metal oxide comprised of cations with a +2 or +3 valence present in the amount of about 10 to about 40 mol % of the thermal barrier coating.

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